Black holes and stars in Horndeski theory

By E. Babichev, C. Charmousis, Antoine Leh'ebel. 2016

175 citations recorded by the source corpus.

We review black hole and star solutions for Horndeski theory. For non-shift symmetric theories, black holes involve a Kaluza–Klein reduction of higher dimensional Lovelock solutions. On the other hand, for shift symmetric theories of Horndeski and beyond Horndeski, black holes involve two classes of solutions: those that include, at the level of the action, a linear coupling to the Gauss–Bonnet term and those that involve time dependence in the galileon field. We analyze the latter class in detail for a specific subclass of Horndeski theory, discussing the general solution of a static and spherically symmetric spacetime. We then discuss stability issues, slowly rotating solutions as well as black holes coupled to matter. The latter case involves a conformally coupled scalar field as well as an electromagnetic field and the (primary) hair black holes thus obtained. We review and discuss the recent results on neutron stars in Horndeski theories.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/676b52ba5da6aa3032be207448c9e952c69623cf

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Citations in the corpus

Asymptotically flat black holes in Horndeski theory and beyond (2017, background): “[24] has shown that, under some assumptions, black holes have no hair (see [28, 32] for more details).”
Horndeski theory and beyond: a review (2019, methodology): “n used to derive hairy black hole solutions from more general Lagrangians in the Horndeski family [278, 279, 280], its bi-scalar extension [281], and the GLPV/DHOST theories [282, 283, 284, 285] (see [286, 287] for a review). Some of these solutions have the Schwarzschild(-(A)dS) geometry dressed wi”
Dark energy and modified gravity in degenerate higher-order scalar–tensor (DHOST) theories: A review (2018, background): “[92–94] and the review [95]) but also for Beyond Horndeski and DHOST theories, as we discuss below.”